Valeo Sicherheitssysteme Gmbh

U-shin Deutschland Zugangssysteme Gmbh

Dietmar Orth

Holger Schiffer

Frank Kummer

Ingo Greuel

Bernd Ulbricht

An adjusting device for automatically actuating a vehicle door of a motor vehicle includes first and second tubular housings connected between a body of the vehicle and the door. A spindle drive includes a spindle driven by an electric-motor drive, a spindle nut threaded on the spindle, a push rod that bears the spindle nut, and a tubular guide part enclosing the push rod and the spindle nut. The tubular guide part is provided with a shape complementary to a shape of the spindle nut and secures the spindle nut against rotation. The tubular guide part is produced by a plastic forming process on a suitable metal tube. A cylindrical spring assists the spindle drive enclosing the tubular guide part. Spacers are provided over an outer circumference of the tubular guide part to reduce friction between the cylindrical spring and the tubular guide part.

Adjusting device having a spindle drive

A device for automatically actuating a vehicle door (), in particular a side door or a tailgate of the motor vehicle, including: A control device () and a drive (') having a motor () with a gearing () connected downstream and at least one transmission element () located between the gearing() and thevehicle door (). The invention facilitates the manual actuation of an automatically actuated vehicle door () that is in an open position. To achieve this, a load sensor () is mounted on the drive (). When a predetermined load on the open vehicle door () has been reached, the sensor generates a control signal, which is fed to the control device () for activating the motor (), or for decoupling a coupling () that is located between the gearing () and the transmission element (), the load on the open vehicle door () being produced e.g. by a corresponding manual pressure on the vehicle door ().

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Owingen, Germany

Dietmar Orth